FIG. 1 is plan view of a tool hub showing our new design;
FIG. 2 is a front view of the tool hub of FIG. 1, the rear view being a mirror image of the same;
FIG. 3 is a left side view of the tool hub of FIG. 1;
FIG. 4 is a plan view of a tool hub showing a modified embodiment of the design shown in FIGS. 1-3;
FIG. 5 is a front view of the tool hub of FIG. 4, the rear view being a mirror image of the same;
FIG. 6 is a left side view of the tool hub of FIG. 4;
FIG. 7 is a plan view showing a second modified embodiment of the design shown in FIGS. 1-3.
FIG. 8 is a front view of the tool hub of FIG. 7, the rear view being a mirror image of the same; and,
FIG. 9 is a left side view of the tool hub of FIG. 7.
The broken lines which define the bounds of the claimed design form no part thereof.